"check" proc in unittest.nim prevents the propagation of changes to var parameters.

[Skrylar]

Code to reproduce: https://gist.github.com/Skrylar/9258024
Compiler version: 69e2dfb

Using the 'check' macro for unit testing ends up preventing outside variables from being updated, which can lead to naive test code failing. Splitting the function call in to separate steps and then checking the variables afterwards functions as expected, however.

[Araq]

Could also be seen as a feature, IMO.

[Skrylar]

Should be documented if its intended though. When I poked my head in to that module, it didn't have a doc-comment about that being intentional behaviour.

[zah]

I consider it a bug. A fix will be possible after we implement var: var variables.